Electrocardiographic characteristics of distal His bundle pacing in a patient with left bundle branch block
1The Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Insights
Distal His bundle pacing successfully corrected left bundle branch block by placing the pacing lead beyond the block. This method achieved low and stable capture thresholds, demonstrating its feasibility.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Left bundle branch block (LBBB) can complicate cardiac pacing.
- Conventional right ventricular pacing may not effectively capture the left ventricle in LBBB.
- His bundle pacing offers an alternative for His-Purkinje system activation.
Abstract:
This case demonstrates the feasibility of placing the pacing lead helix at the His bundle distal to the region of left bundle branch block and reveals three types of electrocardiographic characteristics of distal His bundle pacing during correction of left bundle branch block in a patient. As the pacing lead helix was placed distal to the block, left bundle branch block correction was achieved by pacing with a low and stable capture threshold.
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